Resources and materials to get yourself started with open source
WebDriver for Firefox
Java binary serialization and cloning, fast, efficient, automatic
XSS sanitizer for HTML, MathML and SVG
HTML, CSS and JS framework for developing responsive websites and apps
HTML to PDF converter for PHP
A language for writing HTML user interfaces in Go
Web Extension for saving a copy of complete web page in a single file
Bootstrap 5 & Material Design 2.0 UI KIT
Happy DOM is a JavaScript implementation of a web browser
A static analyzer for Java, C, C++, and Objective-C
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
Static site generator that supports Markdown and reST syntax
AdminKit is a free & open-source HTML dashboard & admin template
Allows to easily create, process and reuse HTML forms
Converts CSS selectors to XPath expressions
Lighter, faster browser kernel of blink to integrate HTML UI in apps
PufferPanel is an open source game server management panel
An extensible Markdown Editor, Viewer and Weblog Publisher for Windows
openvpn-monitor is a web based OpenVPN monitor
Tabler is free and open-source HTML Dashboard UI Kit
Build GUI for your Python program with JavaScript, HTML, and CSS
A JS-independent, tree-shakeable CSS framework
Status, process, and documents for ECMA-262
PSWriteHTML is PowerShell Module to generate beautiful HTML reports